What does the term "overhaul" refer to in firefighting?

In firefighting, the term "overhaul" specifically refers to the process of searching for hidden fires and ensuring complete extinguishment. After the primary fire has been extinguished, firefighters conduct an overhaul to check for any remaining hot spots or smoldering materials that could reignite. This step is crucial because even small embers can lead to a resurgence of flames if not properly addressed. Conducting a thorough overhaul involves careful inspection of the area, including carefully moving materials and debris to ensure that all potential sources of ignition have been dealt with.

This attention to detail during overhaul helps to ensure the safety of the structure and surrounding areas while also preventing any potential re-ignition of the fire. It emphasizes the importance of not only extinguishing visible flames but also addressing any hidden danger that may still persist after the main fire is extinguished.